Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 12

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  exotic species
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
Reptiles are becoming increasingly popular animals in amateur husbandry in Poland and worldwide. The world literature, however, does not provide data on the actual causes of radiological and ultrasound consultations in certain groups of animals, including reptiles. The aim of the study was the analysis of causes and results of diagnostic imaging examinations. The study was based on the data of 75 lizards which were patients of the university diagnostic imaging service in the years 2006-2014. The most common clinical signs in those animals were visible body deformations (33.33%), loss of body weight (30.67%) and loss of appetite (26.67%). In cases in which a preliminary diagnosis had been made, the largest proportion of animals were referred with suspected post-traumatic changes (12%), dystocia (10.67%) and ileus (9.33%). In diagnostic imaging tests, musculoskeletal (29.33%) and coelomic abnormalities (40.33%) were most commonly confirmed. Coelomic changes affected mainly the liver, reproductive system and gastrointestinal tract. For the musculoskeletal system, the most frequently identified causes were the presence of post-traumatic changes, malformations of the vertebral column, as well as metabolic bone disease. Cardiorespiratory and urinary problems were observed only sporadically. In twenty-two animals (29.33%), radiographic and ultrasound examinations failed to establish a diagnosis. The results of this study provide valuable data on the cross-section of the most common problems leading to diagnostic imaging evaluation in lizards. This research demonstrates that, despite the growing popularity of exotic animals, most of the problems diagnosed in such animals still arise from inappropriate breeding and housing conditions. In most cases, diagnostic imaging provides valuable information, making it possible to implement further steps.
Trichocerca simoneae De Smet described in 1989 has since been found in tropical and subtropical areas, but was not recorded in Poland before World War II. A bibliography of Polish rotifers by Wiszniewski (1953), although very comprehensive, does not refer to T. simoneae. However, in the studies of plankton of the dystrophic lake, i.e. humic one with water rich in humic acids, acidic pH and brown coloured, carried out in the years 1998–2000, the species dominated. Here, studies in 39 small, inter-forest lakes of north-eastern Poland revealed T. simoneae in 15 of them, often at high densities, up to ca 6000 ind L-1. The possible reasons for this ‘invasion’ are: (1) zooplankton communities in dystrophic lakes are unsaturated with biotic interactions too weak to exclude invaders; CCA and RDA analyses showed that T. simoneae preferred habitats with low number of zooplankton species of low density and dystrophic lakes seem to offer such habitats; (2) long-term deposition of rotifer resting eggs is probably more successful in sediments decaying at low rates. The latter possibility seems to be confirmed by observed in the littoral zone of dystrophic lakes appearance from time to time, of rare, mostly tropical species of Rotifera (e.g., Lecane hornemnni, L. monostyla, L. sola).
The present investigation reflects the findings of exotic floristic composition at Peddagattu, Nalgonda district, Telangana State, India. A total of 125 exotic species of taxa belonging to 101 genera and 44 families were recorded in the study. Leguminosae is the most dominant family representing with 21 species, followed by Compositae (14 species), Apocynaceae, Convolvulaceae and Poaceae (7 species each). As per the nativity of exotic species representation in the study area are mostly from belongs to tropical America followed by tropical Africa and South America at Peddagattu.
The present paper reports the occurrence of the Chinese mitten crab Eriocheir sinensis H.M ilne Edwards, 1854 in the coastal waters of the Gulf of Gdańsk, and attempts an initial characterization of the crabs occurring in this area.
Japanese larch (Larix kaempferi Sarg.) is one of the most frequent exotic species in Polish woodlands. The basic object of research comprised 60 stands of the studied species, located mainly in the northern and western parts of Poland. The growth results for the studied species, evaluated on the basis of the average height (hg55), were compared with data describing the local climate and the stand location within the botanical and climatic zoning. The results confirm the opinion that the Japanese larch prefers a climate of maritime character and generally shows high degree of flexibility regarding its climatic requirements (very large differences between the growth conditions in the studied area and the country of origin). The dependence between the growth results and precipitation is however lower than expected. The most interesting results include the relatively clear connection between the height of the larch stands and the Degórski’s (1984) ‘floristic’ ‘K’ (continentality) index.
The presently reported finding of leopard pleco, Pterygoplichthys gibbiceps (Kner, 1854) (Loricariidae), in open waters of the Brda River in the centre of Bydgoszcz, constitutes the first record of a south-American loricariid fish species in Poland. The specimen found is described and illustrated. The finding is discussed in association with other alien species sightings in Poland. The described leopard pleco is possibly the next example of an emerging alien fish species in inland Polish waters.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.